CN102967833A - Fluxgate sensor in magnetic core structure - Google Patents
Fluxgate sensor in magnetic core structure Download PDFInfo
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- CN102967833A CN102967833A CN2012104545465A CN201210454546A CN102967833A CN 102967833 A CN102967833 A CN 102967833A CN 2012104545465 A CN2012104545465 A CN 2012104545465A CN 201210454546 A CN201210454546 A CN 201210454546A CN 102967833 A CN102967833 A CN 102967833A
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- core structure
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Abstract
The invention discloses a fluxgate sensor in a magnetic core structure. The fluxgate sensor comprises a casing, a magnetic core and a cover and is characterized in that the magnetic core is in a lamination structure which is made of a non-crystalline material, the magnetic core is located inside the casing, the upper portion of the casing is connected with the cover, the magnetic core is in a round shape, a runway shape, a U shape, an E shape, an I shape or a T shape, and the non-crystalline material refers to a cobalt-based non-crystalline sheet, an iron-based non-crystalline sheet or an iron-nickel-based non-crystalline sheet. According to the fluxgate sensor, the magnetic core material in the structure is used, so that the sensitivity can be improved, small changes can be detected, and finally, the precision of the whole detection system can be improved.
Description
Technical field
The present invention relates to a kind of sensor of probe apparatus, relate in particular to a kind of fluxgate sensor of core structure.
Background technology
Early 1930s, Fluxgate Technique has appearred, it can measure constant and the low frequency low-intensity magnetic field, its ultimate principle is to utilize the soft magnetic material magnetic core of high magnetic permeability, low-coercivity under excitatory effect, the electromotive force characteristic of the even-order harmonic component that becomes with environmental magnetic field appears in inductive coil, measure the even-order harmonic component by high performance fluxgate modulate circuit, thereby record the size of environmental magnetic field.Roentgen Aschenbrenner in 1936 and Goubau adopt second harmonic ring core probe measurement geomagnetic field impact fluctuation GEOMAGNETIC CHANGE in the horizontal direction first, the record magnetic perturbation also proposes the principle of work of fluxgate, the people such as Lapierre, Autranikian, Vacquier have done further exploration to technique subsequently, thereby proved the feasible of this technology, the instrument that utilizes it to make also constantly obtains development.
Fluxgate Technique is a kind of ubiquitous electromagnet phenomenon, and its ultimate principle is obeyed Faraday's electromagnetic induction law.Fluxgate sensor also claims flux-gate magnetometer, and it is that the high magnetic permeability iron core utilizes the nonlinear relationship of its magnetic induction density and magnetic field intensity to measure a kind of sensor of low-intensity magnetic field under the saturation activation of alternating magnetic field in by measuring magnetic field.Compare with general type weak magnetic survey instrument, that fluxgate sensor has is highly sensitive, small and exquisite, easy to use, low-power consumption, can directly measure the advantages such as component in magnetic field.The fluxgate sensor development is rapid, and application is very extensive, also has a lot of units being engaged in the development of fluxgate sensor in China.The high-performance magnetism flux-gate magnetometer technical merit of China has in fact approached or has reached the international most advanced level of like product, has had some units to develop resolving power and degree of stability is the model machine of 0.1nT.
Summary of the invention
The object of the present invention is to provide a kind of fluxgate sensor of core structure, it has simple in structure, highly sensitive advantage.
The present invention is achieved like this, a kind of fluxgate sensor of core structure, and it comprises shell, magnetic core and lid, it is characterized in that magnetic core is the lamination that non-crystalline material is made, and magnetic core is positioned at shell, and the top of shell is connected with lid; Described magnetic core is circle, track type, U-shaped, E shape, I shape or T shape; Described non-crystalline material is the Ni-based amorphous sheet material of cobalt base amorphous sheet material, Fe-based amorphous sheet material or iron.
Technique effect of the present invention is: after the present invention adopts the said structure core material, can improve sensitive precision, can both detect for small variation, and finally can promote the precision of whole detection system.
Description of drawings
Fig. 1 is the structural representation of track type fluxgate sensor of the present invention.
Fig. 2 is the decomposition texture synoptic diagram of track type fluxgate sensor of the present invention.
Fig. 3 is the structural representation of I shape fluxgate sensor of the present invention.
Fig. 4 is the structural representation of U-shaped fluxgate sensor of the present invention.
In the drawings, 1, shell 2, magnetic core 3, lid.
Embodiment
Below in conjunction with drawings and Examples the present invention is done and to elaborate:
Embodiment 1: the track type fluxgate sensor, and as shown in Figure 1, 2, magnetic core 2 is designed to track type, and magnetic core 2 is laminations of being made by Fe-based amorphous sheet material, and magnetic core 2 is placed in the shell, and behind the close the cover 3, coiling on shell 1 can be made into electromagnetic probe; This kind track type fluxgate sensor differentiates the road than common magnetic flux door sensor and sensitivity greatly improves, and resolving power and degree of stability in its test are about 0.5nT.
Embodiment 2: as shown in Figure 3, I shape fluxgate sensor, magnetic core 2 is laminations of being made by cobalt base amorphous sheet material, I shape magnetic core 2 is placed in the shell 1 cover lid 3, after wrapping with plastics, by the combination of two I shape fluxgate sensors, and on shell 3 coiling, can be made into electromagnetic probe, laboratory detection result shows that its resolving power and degree of stability slightly are about 1nT.
Embodiment 3: as shown in Figure 4, the U-shaped fluxgate sensor, magnetic core 2 is designed to U-shaped, magnetic core 2 is laminations of being made by the Ni-based amorphous sheet material of iron, magnetic core 2 is placed in the shell 1, behind the close the cover 3, coiling on shell 1, the resolving power and the degree of stability that can be made into electromagnetic probe are slightly larger than 1nT.
Claims (3)
1. the fluxgate sensor of a core structure, it comprises shell, magnetic core and lid, it is characterized in that magnetic core is the lamination that non-crystalline material is made, and magnetic core is positioned at shell, and the top of shell is connected with lid.
2. the fluxgate sensor of a kind of core structure as claimed in claim 1 is characterized in that described magnetic core is circle, track type, U-shaped, E shape, I shape or T shape.
3. the fluxgate sensor of a kind of core structure as claimed in claim 1 is characterized in that described non-crystalline material is the Ni-based amorphous sheet material of cobalt base amorphous sheet material, Fe-based amorphous sheet material or iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104545465A CN102967833A (en) | 2012-11-14 | 2012-11-14 | Fluxgate sensor in magnetic core structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104545465A CN102967833A (en) | 2012-11-14 | 2012-11-14 | Fluxgate sensor in magnetic core structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102967833A true CN102967833A (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012104545465A Pending CN102967833A (en) | 2012-11-14 | 2012-11-14 | Fluxgate sensor in magnetic core structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614690A (en) * | 2014-12-18 | 2015-05-13 | 哈尔滨理工大学 | Micro-array type fluxgate sensor |
| CN104820196A (en) * | 2015-04-11 | 2015-08-05 | 西北工业大学 | Low-power consumption fluxgate sensor of n-shaped structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6456069B1 (en) * | 1999-03-05 | 2002-09-24 | The United States Of America As Represented By The Secretary Of The Navy | Fluxgate magnetic field sensor incorporating ferromagnetic test material into its magnetic circuitry |
| US20020180434A1 (en) * | 2001-04-19 | 2002-12-05 | Hoton How | Fluxgate signal detection employing high-order waveform autocorrelation |
| CN102012491A (en) * | 2010-11-22 | 2011-04-13 | 西北工业大学 | Single core flux gate and flux gate double-shaft sensor |
-
2012
- 2012-11-14 CN CN2012104545465A patent/CN102967833A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6456069B1 (en) * | 1999-03-05 | 2002-09-24 | The United States Of America As Represented By The Secretary Of The Navy | Fluxgate magnetic field sensor incorporating ferromagnetic test material into its magnetic circuitry |
| US20020180434A1 (en) * | 2001-04-19 | 2002-12-05 | Hoton How | Fluxgate signal detection employing high-order waveform autocorrelation |
| CN102012491A (en) * | 2010-11-22 | 2011-04-13 | 西北工业大学 | Single core flux gate and flux gate double-shaft sensor |
Non-Patent Citations (1)
| Title |
|---|
| JAN KUBIK 等: "Low-Power Printed Circuit Board Fluxgate Sensor", 《IEEE SENSORS JOURNAL》, vol. 7, no. 2, 28 February 2007 (2007-02-28) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614690A (en) * | 2014-12-18 | 2015-05-13 | 哈尔滨理工大学 | Micro-array type fluxgate sensor |
| CN104614690B (en) * | 2014-12-18 | 2018-03-02 | 哈尔滨理工大学 | A kind of miniature array fluxgate sensor |
| CN104820196A (en) * | 2015-04-11 | 2015-08-05 | 西北工业大学 | Low-power consumption fluxgate sensor of n-shaped structure |
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Application publication date: 20130313 |